Consuming plant chemicals (e.g., polyphenols) may have beneficial effects on human health that, if confirmed, may warrant inclusion in combat rations. Ration developers would like to determine whether the fortification of a high sugar food item with a polyphenol-rich freeze-dried fruit and/or a fruit extract improves blood sugar response and promotes other positive physiological changes (e.g., satiety) in a dose-response manner. This study will test four different types of snack bar with various polyphenol doses, and compare blood response to a snack bar without polyphenols.